Re: [PATCH v3 3/7] mm/gup: remove vmas parameter from get_user_pages_remote()

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On 15.04.23 14:09, Lorenzo Stoakes wrote:
The only instances of get_user_pages_remote() invocations which used the
vmas parameter were for a single page which can instead simply look up the
VMA directly. In particular:-

- __update_ref_ctr() looked up the VMA but did nothing with it so we simply
   remove it.

- __access_remote_vm() was already using vma_lookup() when the original
   lookup failed so by doing the lookup directly this also de-duplicates the
   code.

This forms part of a broader set of patches intended to eliminate the vmas
parameter altogether.

Signed-off-by: Lorenzo Stoakes <lstoakes@xxxxxxxxx>
---

I guess we should never drop the mmap lock temporarily in these cases, so it's fine.

Acked-by: David Hildenbrand <david@xxxxxxxxxx>

--
Thanks,

David / dhildenb





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